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J. JACOBS;

ILLUMINATING TILE. No. 385,269. Patented June 26, 1888.

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(No Model.) a Sheets-Sheet a. J. JACOBS.

ILLUMINATING TILE.

No. 385,269. Patented June 26, 1888.

UNITED STATES ATENT Grinch.

JACOB JACOBS, OF NEW YORK, N. Y.

ILLUMINATING-TILE.

SPECIFICATION forming part of Iietters Patent No. 385,269, dated June 26, 1588.

Application filed February 24, 1887. Serial No. 228,759.

To all whom it may concern.

Be it known that I, J AOOB JACOBS, of New York city, in the county of New York, and in the State of New York, have invented certain new and useful Improvements in Illumimating-Tiles; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which- Figurel is a perspective view of my venti1ating-lens as preferably applied to use in an illuminating-tile. Fig. 2 is a like view of the same when inserted directly into the supportingframe. Fig. 3 is a section upon line at w of Fig. 1, and Fig. 4 is a like view upon line 2 z of Fig. 2.

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is to render practicable the proper ventilation of apartments or spaces which are inclosed by illuminating-tiles; to which end said invention consists, principally, in an illuminatingtile in which a light-opening is provided with a lens that has a central opening, substantially as and for the purpose hereinafter specified.

It consists, further, as an improvement in illuminating-tiles, in a lens which is provided with a central opening, substantially as and for the purpose hereinafter shown.

It consists, finally, as an improvement in illuminating-tiles, in a lens which is provided with a central opening, in combination with a lens that is adapted to inclose the same and to fit into and be secured within the lightopening of a tile, substantially as and for the purpose hereinafter shown and described.

In the carrying of my invention into practice I usually employ a metal tile, A, in which the light-openings a and a are square and arranged in parallel lines, as shown, and each of such openings is provided around its lower edge with an inwardly-projecting supportingledge, a.

Within each light-opening a is placed a correspondingly-shaped glass lens, B, which substantially fills the space laterally, and is held in place therein by a cement joint, 0, that is made in the usual way between the inner walls of said opening and the outer sides of said lens. WVithin the central portion of the lens B is provided an opening, 2;, which is preferably round, and near the lower end of (No model.)

the same is an inwardlyprojecting ledge, 12, that corresponds to and performs the same office as the ledge a of the tile A. Said opening 1; receives and contains a correspondinglyshaped lens, D, which rests upon and is supported by the ledge b, and is secured in place by a cementjoint, E, which is formed between the periphery of said lens D and the sides of said opening I) Within the lens D is provided a central opening, d, which extends entirely through the same and has a regularly increasing diameter from its outer end to its inner end. The outer end of said opening has such small diameter as to render impracticable the inward passage of any material quantity of rain, while air is enabled to move freely through the same, so as to afford ventilation for the space inclosed by the tile.

In consequence of the tapering form of the air-passage d, air from within will find ready exit, while in case of an inward movement of air it will be diffused laterally within the apartment instead of moving in a direct line into the same and causing an unpleasant draft upon those within.

I do not claim, broadly, a plate of illuminating-glass perforated with one or more conical holes for the purpose of ventilation.

Having thus described my invention, what I claim is 1. An illuminating-tile in which a lightopening is provided with a lens that has a central opening, substantially as and for the purposespecified.

. 2. As an improvement in illuminating-tiles,

a lens which is provided with a central open- I JACOB JACOBS.

Witnesses:

WILLIAM D. LANDRAY, M. WARLEY PLATZEK.

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